Other materials

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PROJECTIONS

Below is a list of documents that contain the definitive and tested equations (PDF) for the principal projections. 

 

Note that each document has two parts:  (1) Equations that calculate zone parameters that are only calculated once up front when projecting a group of points, and (2) Equations that are repeated for each point to be projected.  This is done to prevent unecessary duplication in the calculations. 

 

Provided are direct and inverse solutions.  

 

Lambert Direct :
LambertDirectEquationsCleanHCS.pdf
Adobe Acrobat document [116.5 KB]
Lambert Direct Projection Program
LD.txt
Text document [14.6 KB]
Lambert Inverse:
LambertInverseEquationsCleanHCS.pdf
Adobe Acrobat document [173.3 KB]
UTM Direct
UTMDirectEquationsCleanHCS.pdf
Adobe Acrobat document [112.9 KB]
UTM Inverse
UTMInverseEquationsCleanHCS.pdf
Adobe Acrobat document [97.1 KB]
ECEF Direct
GEODETIC-ECEF-HCS.pdf
Adobe Acrobat document [134.6 KB]
ECEF Inverse
ECEF-GEODETIC-HCS.pdf
Adobe Acrobat document [225.8 KB]

 

Below are other documents that may be of interest in geomatics:  

 

GPS Accuracy
GPS Accuracy.pdf
Adobe Acrobat document [1.3 MB]
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